Dissipative Effect on Formation of Ion Acoustic Solitons
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概要
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Effect of dissipation on the formation of ion acoustic solitons is investigated byexperiments and by numerical calculations. In the experiments, a large amplitude initialperturbation does not evolve into solitons, but into a triangular wave with ripples on aleg when a neutral gas pressure is increased or when a random low frequency nouse ussupet-posed. Numerical analyses of the K-dV equation with dissipation terms show thatah initial perturbation develops into a triangular wave when the dissipation depends onthe wavenumber. Therefore the formation of the triangular wave in the experiment isnot due to an increase of collisional damping, but to an increase of collusionlessdissipation, i.e. Landau damping resulting from a decrease of the temperature ratiobetween the electrons and ions.
- 社団法人日本物理学会の論文
- 1977-09-15
著者
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Watanabe Shinsuke
Research Institute For Energy Materials Yokohama National University
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Watanabe Shinsuke
Research Information Center Institute Of Plasma Physics Nagoya University:research Institute For Ene
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